JPH06111104A - Automatic vending machine for frozen food - Google Patents

Abstract

PURPOSE:To make it possible to automatically correct heating time in accordance with an inputted voltage value and to attain proper heating by providing an automatic vending machine for frozen food with a voltage inspecting means for inspecting inputted power supply voltage and a heating time correcting means. CONSTITUTION:A control part 11 executes all control such as the start of thawing and heating of commodities, the change of heating time corresponding to voltage and the end of heating. A voltage detecting part 9 detects impressed voltage. When a commodity selecting button 3 is depressed, a commodity is carried out from a freezer 6 and fed to an electronic range 2 and power is supplied to the range 2. Then whether the supplied voltage is included in a rated range or not is judged. When the voltage is lower than the rated range, correction time is calculated in accordance with the voltage. The correction time is added to previously set heating time. Thereby the generation of troubles such as the lack of heating due to low power supply voltage and overheating due to high power supply voltage can be prevented and commodities to be vended can properly be heated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a frozen food vending machine equipped with a microwave oven, and more particularly to control when the input voltage of the microwave oven rises or falls abnormally.

[0002]

2. Description of the Related Art A conventional frozen food vending machine is connected to a commercial power source supplied from an electric power company at a place where the vending machine is installed to supply electric power. The product heating operation is performed for a preset heating time according to the product to be sold regardless of the fluctuation of the supplied voltage.

[0003]

However, when many loads other than the microwave oven are connected to the wiring to which power is supplied, or the capacity of the wiring is insufficient, the voltage applied to the microwave oven decreases. However, when power is supplied through the power receiving facility, there is a problem that the applied voltage becomes high due to the facility and the like.

In view of the above problems, it is an object of the present invention to provide a frozen food vending machine which automatically corrects the heating time according to the input voltage value.

[0005]

In order to solve the above problems, the frozen food vending machine of the present invention, as shown in FIG. 1, is a heating time setting means for setting a time for heating a product, and a heating time setting means. Frozen food automatic vending including storage means for storing time, microwave oven for heating frozen food, and control means for controlling operation and stop of the microwave oven, which heats and sells frozen products by the microwave oven In the machine
A voltage check means for checking the input power supply voltage and a heating time correction means for changing the heating time set by the setting means when the input voltage deviates from a predetermined voltage are provided.

[0006]

According to the present invention, it is determined whether the supplied voltage is within the rating, and if it is not within the rating, it is determined whether it is lower than the rating. If it is lower than the rating, it is preset. The heating time is read, the correction time corresponding to this voltage is calculated, and this time is added. Then, the heating of the microwave oven is started, and the heating is stopped at the end of time.

When the supply voltage is higher than the rated value, the heating time is read, the correction time is calculated, this time is subtracted from the heating time, and the product is heated for the subtracted time.

[0008]

FIG. 2 is a block diagram showing the configuration of an embodiment of the present invention, and FIG. 3 is an external view of a frozen food vending machine of the present invention. In the figure, 1 is a frozen food vending machine main body, 2 is a microwave oven for heating food, 3 is a product selection push button, 4 is a coin slot, 5 is a reader, 6 is a freezer in the vending machine, 7 Is a conveyor, 8 is a product outlet, 9 is a voltage detection unit for detecting an input voltage, 10 is a keyboard having operation buttons such as a numeric keypad for setting data, 11
Is a main control unit for controlling the microwave oven 2 and the like, including a CPU having a determination function and outputting a control signal, and 12 is a storage unit.

In such a structure, when the customer inserts a coin into the coin insertion slot 4 and presses the commodity selection push button 3, the designated commodity is thawed, heated and taken out from the commodity outlet 9. The control unit 11 performs all controls such as thawing and heating of products, changing heating time according to voltage, and ending heating. The operation of the frozen food vending machine having the above configuration will be described below with reference to the flowchart of FIG.

First, when the product selection button 3 is pressed, the product is taken out of the freezer 6 and put into the microwave oven 2, and electric power is input to the microwave oven 2 (step S1). Then, it is determined whether the supplied voltage is within the rating (step S
2) If it is not within the rating, it is determined whether it is lower than the rating (step S3), and if it is lower than the rating, the preset heating time is read (step S4), and then the correction time corresponding to this voltage is set. calculate. (Step S5).
Next, this time is added (step S6). This correction time is set to an appropriate heating correction time in advance, such as how many seconds when the supply voltage is 10% lower. Then heating of the microwave oven is started (step S
7) Then, it is determined whether or not the time is over (step S8), and the heating is stopped when the time is over (step S9).

If the supply voltage is higher than the rated voltage in step S3, the heating time is read (step S1).
4) Calculate the correction time (step S15), then subtract this time (step S16) and proceed to step S7 to heat the product. If the supply voltage is within the rating in step S2, the process proceeds to step S7 to heat for a predetermined time.

[0012]

According to the present invention, the voltage to be supplied to the microwave oven is determined, and when the voltage is out of the predetermined value, the preset heating time is corrected, so that the power supply voltage is low and the heating is insufficient. In addition, the inconvenience of overheating due to high power supply voltage is eliminated, and the sold product can be properly heated.

[Brief description of drawings]

FIG. 1 is a diagram for responding to complaints of a frozen food vending machine of the present invention.

FIG. 2 is a configuration block diagram showing an embodiment of the present invention.

FIG. 3 is an external view of a frozen food vending machine according to the present invention.

FIG. 4 is a flowchart showing the operation of the block diagram of FIG.

[Explanation of symbols]

 1 Frozen food vending machine main body 2 Microwave oven 3 Product selection push button 4 Coin slot 5 Reader 6 Freezer 7 Conveyor 8 Product outlet 9 Voltage detector 10 Keyboard 11 Main controller 12 Memory

Claims (1)

[Claims] 1. A heating time setting means for setting a time for heating a product, a storage means for storing the heating time, a microwave oven for heating frozen food, and control of operation and stop of the microwave oven. In a frozen food vending machine that includes a control means and heats and sells frozen products by the microwave oven, a voltage checking means for checking a power supply voltage to be input, and the setting means when the input voltage deviates from a predetermined voltage. A frozen food vending machine, comprising: a heating time correction means for changing the heating time set in step 1.